TOPSHOT-SERBIA-MACEDONIA-EUROPE-MIGRANTS

TOPSHOT - Migrants and refugees wait for security check after crossing the Macedonian border into Serbia, near the village of Miratovac, on January 29, 2016.
More than one million migrants and refugees crossed the Mediterranean Sea to Europe in 2015, nearly half of them Syrians, according to the UN refugee agency, UNHCR. The International Organisation for Migration said las week that 31,000 had arrived in Greece already this year. / AFP / ARMEND NIMANI (Photo credit should read ARMEND NIMANI/AFP/Getty Images)